Spark plug oddity

[Mantis]

I started working on my EM today, with the first goal to get it running decently to see where I should go with the engine.

I bought the basic tune up parts since it looks like some of the parts could possibly be original. If nothing else, really old.

When I pulled the plugs I found an odd adapter on #5. It is brass, and simply does not want to come off. As I look at it, I am not sure I even want it as it sits the plug really high away from the chamber.

Are there any good options to replace the adapter like a helicoil that would work better?

At present, it is running with the old plugs until I can figure this out.

[terribleted]

Best normal repair insert is called a timesert. That one may be enlarged enough that a larger version called a bigsert may be needed. Measure the existing hole diameter to decide which one to use. Clark's rents the tool needed and sells the inserts (normal size anyway). They also sell the tool...I am not sure whether they offer the bigsert tool and inserts.

[Mantis]

Well, I like the look of the serts, but that looks like a head pull.

No way I do that in place.

[toytron]

They look like oil foul plug adaptors. They were to prevent the plus from getting fouled by engine oil in a car that might be burning oil.

Ed Stevenson

[toytron]

Looking again at the pictures (which did not show up when I clicked on the topic) it isn't an oil fouler adapter because there would be a hex to allow removal.

Ed Stevenson

[64powerglide]

Did you try a new plug in #5 or are you saying the adaptor is in the head still & you cannot get it out?? Attach a photo, at the bottom of your new post page is says attachments click that then select "add files" then select the file from your computer then click Submit

[Mantis]

I attached two pictures

The sleeve came out with the plug and I can't remove it from the plug.

[64powerglide]

Put some heat to the brass & expand it then try turning it. Try to file a couple flat spots opposite each other on that top ring of the adaptor so you can get a thin vice grip on it. You mastered the photo's so now you can get that thing off.

[dave t]

I had a striped plug hole one time. I was told to put a thick glob of axle grease on the tap to catch the shavings. i turned 1 revolution then removed it. cleaned & regreased it and repeted until i threaded the hole all the way. installed a timecert and away i went. no head removal.

Sent from my SM-G930V using Corvair Forum mobile app

[joelsplace]

If you are looking them up it's called a Time-Sert. You can get the kit on eBay but it looks like that is what came out with the plug. Was the plug really hard to get out? If the insert was properly installed the plug may have been cross threaded into it but it should have been very difficult to remove because the insert should have been locked in place. They make a Big-Sert to repair a previously messed up insert job. The kits are expensive. $200+
If the threads look good I the had you may be able to install a new normal sized insert. The size is 14mm x 1.25 x 11 I believe.

[joelsplace]

Sorry Ted I missed your post somehow.

[Mantis]

If the insert was properly installed the plug may have been cross threaded into it but it should have been very difficult to remove because the insert should have been locked in place. They make a Big-Sert to repair a previously messed up insert job. The kits are expensive. $200+
If the threads look good I the had you may be able to install a new normal sized insert. The size is 14mm x 1.25 x 11 I believe.

I am guessing that the Sert (Time/Big) was not installed correctly. It was a little harder to get out, but not too hard. If you look, it appears that it was not even threaded in all the way. That and if I see the Sert documentation correctly, I probably want a shorter Sert so the plug is not shrouded.

Looks like I add something else to the project list...

[66vairguy]

I am guessing that the Sert (Time/Big) was not installed correctly. It was a little harder to get out, but not too hard. If you look, it appears that it was not even threaded in all the way. That and if I see the Sert documentation correctly, I probably want a shorter Sert so the plug is not shrouded.

Looks like I add something else to the project list...

Agreed - It may be an insert similar to a Time-Sert, but it was not installed deep enough so the plug flange locked on the insert instead of contacting the head. I've seen this improper installation a few times. Care must be taken so the top of the insert is below the head area the spark plug contacts.

[martyscarr]

I don't think a Big Sert is going to work, the sleeve looks like it has a larger diameter than the maximum size hole for a Big Sert. From the manufacturer: The stripped hole should not be larger than 16.8mm or .660 inches.

I agree with toytron that it looks to be an anti-fouler, but I also have never seen one without a hex head for removal.

If you ever need to do a Big Sert repair, the tool can be rented from aircooled.net:
https://vwparts.aircooled.net/Big-Sert- ... -5141s.htm

[terribleted]

If the insert was properly installed the plug may have been cross threaded into it but it should have been very difficult to remove because the insert should have been locked in place. They make a Big-Sert to repair a previously messed up insert job. The kits are expensive. $200+
If the threads look good I the had you may be able to install a new normal sized insert. The size is 14mm x 1.25 x 11 I believe.

I am guessing that the Sert (Time/Big) was not installed correctly. It was a little harder to get out, but not too hard. If you look, it appears that it was not even threaded in all the way. That and if I see the Sert documentation correctly, I probably want a shorter Sert so the plug is not shrouded.

Looks like I add something else to the project list...

The insert from your engine is neither a timesert nor a bigsert it is some other brand and not of particularly good design. The timeserts use a special tool that cuts the threads for the insert and cuts the head material so it all fits together nicely. They do not have that big ridge where the sparkplug seals and they essentially lock into the head when installed correctly so they do not come out with the plug like that one did. They also sit flush into the head.

[Mantis]

Got it.

Well, worst case I have to get a different head...